ignominiousEnglishOxford American Thesaurusignominious adjective 1 the leader's ignominious defeat: humiliating, undignified, embarrassing, mortifying, shameful, disgraceful, dishonorable, discreditable, ignoble, inglorious, abject, sorry, wretched, miserable, pitiful; rare humiliatory. ▷antonyms glorious. 2 the regime's most ignominious crimes: heinous, infamous, scandalous, disgraceful, shameful, contemptible, despicable, shabby, wicked, vile, villainous, base, low, ignoble, wretched. ▷antonyms admirable.